Try this, jQuery how to get multiple checkbox's value
$(document).ready(function() {_x000D_
$(".btn_click").click(function(){_x000D_
var test = new Array();_x000D_
$("input[name='programming']:checked").each(function() {_x000D_
test.push($(this).val());_x000D_
});_x000D_
_x000D_
alert("My favourite programming languages are: " + test);_x000D_
});_x000D_
});
_x000D_
<!DOCTYPE html>_x000D_
<html lang="en">_x000D_
<head>_x000D_
<meta charset="utf-8">_x000D_
<title>jQuery Get Values of Selected Checboxes</title>_x000D_
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script> _x000D_
</head>_x000D_
<body>_x000D_
<form>_x000D_
<h3>Select your favorite Programming Languages :</h3>_x000D_
<label><input type="checkbox" value="PHP" name="programming"> PHP</label>_x000D_
<label><input type="checkbox" value="Java" name="programming"> Java</label>_x000D_
<label><input type="checkbox" value="Ruby" name="programming"> Ruby</label>_x000D_
<label><input type="checkbox" value="Python" name="programming"> Python</label>_x000D_
<label><input type="checkbox" value="JavaScript" name="programming"> JavaScript</label>_x000D_
<label><input type="checkbox" value="Rust" name="programming">Rust</label>_x000D_
<label><input type="checkbox" value="C" name="programming"> C</label>_x000D_
<br>_x000D_
<button type="button" class="btn_click" style="margin-top: 10px;">Click here to Get Values</button>_x000D_
</form>_x000D_
</body>_x000D_
</html>
_x000D_